The effects of process temperature and ammonium supplementation on fermentation profile, volatile aroma composition and wine sensory characteristics were evaluated in Torrontés Riojano (Vitis vinifera L.) wines from Mendoza (Argentina). To do so, musts were fermented at two different temperatur...

Conventional methods for heavy metal removal from industrial wastewater involve a chemical precipitation. This process leads to sludges without any commercial value which are stored in specialized landfills. This paper describes a study on the possibility to perform selective precipitation of bi...

A method for calibrating Raman intensities of diluted aqueous solutions, based on the integrated intensity of the OH stretching bands of liquid water as an external intensity standard, is described and used to obtain a difference spectrum that reveals intensity changes mainly due to the intermol...

Pentenenitriles contain two-reducible functionalities: a carbon–carbon double bond and a nitrile group, either of which may undergo hydrogenation during reaction. In this work we show how the deposition of hydrocarbonaceous material on the catalyst surface during pentenenitrile hydrogenation ov...

The isomerization of 2-methyl-3-butenenitrile (2M3BN) to 3-pentenenitrile (3PN) was followed using operando FTIR spectroscopy. The spectra were analyzed comprehensively to obtain kinetic profiles from the different band dynamics. Several spectral regions were transformed to their second derivati...

The Raman (3200–20 cm−1) spectra of liquid and solid trans-CH3CHCHCH2CN, and the infrared (3200–30 cm−1) spectra of gaseous and solid trans-3-pentenenitrile have been recorded. The spectra of the fluid phases are consistent with two stable conformers in equilibrium at ambient temperature. The ...

The infrared (3500–40 cm−1) spectra of gaseous, liquid and solid 3-methyl-3-butene nitrile, CH2C(CH3)CH2CN, and trans 3-pentenenitrile, CH3CHCHCH2CN, have been recorded. Both the cis and gauche conformers have been identified for both conformers in the fluid phases but only the cis form remains...

In this work, great efforts have been made to achieve the large-scale industrial separation of RS-4-vinyl-1-cyclohexene and ZE-3-pentenenitrile. Initially, the vapour pressures of ZE-3-pentenenitrile were determined. The experimental values were correlated by an Antoine-type equation, and the pr...

The relative-rate technique has been used to obtain rates coefficients for the reactions of (E)-3-pentenenitrile (CH3CHCHCHCN) and 4-pentenenitrile (CH2CHCH2CH2CN) with OH radicals and Cl atoms at 298 K and (760 ± 10) Torr total pressure of synthetic air using different reference compounds. The...

The catalytic isomerization reaction of 2-methyl-3-butenenitrile (2M3BN) into 3-pentenenitrile (3PN) has been performed in the presence of Ni(0) and phosphine complexes and in biphasic ionic liquid/organic solvent. Several neutral and ionic phosphines and ionic liquids have been tested, the best...

A combined experimental and theoretical study was conducted to investigate the isomerization of 2-methyl-3-butenenitrile (2M3BN) to 3-pentenenitrile (3PN) and to 2-methyl-2-butenenitrile (2M2BN) catalyzed by nickel diphosphine complexes. Ni(1,4-bis(diphenylphosphino)butane) (dppb) was identified...

Mono-cationic Ru(II)-complexes [Ru(L)X(CH3CN)2]⋅X 1∼4 (1, L = 2,6-bis(benzimidazol-2-yl) pyridine (L1), X = Cl; 2, L = L1, X = OTf; 3, L = 2-(N-benzyl-benzimidazole-2-yl)-6-(benzimidazole-2-yl)pyridine (L2), X = Cl; 4, L = 2,6-bis(N-benzyl-benzimidazole-2-yl)pyridine (L3), X = Cl) were prepared...

In the present study, structural properties of 2-[(1H-benzimidazol-2-ylmethyl)-amino]-benzoic acid methyl ester have been studied extensively by spectral methods and X-ray crystallography. Quantum mechanical calculations of energies, geometries, vibrational wavenumbers, NMR and electronic transi...

Lithium zinc phosphate (LZP) has been synthesized through a co-precipitation process and characterized by XRD and IR spectroscopy. The inhibitive performances of this pigment for corrosion of mild steel have been discussed in comparison with the zinc phosphate (ZP) in the pigment extract solutio...

The purpose of this work is to assess the suitability of potential electrolyte additives for zinc morphology control and improved electrochemical performance of the zinc electrode for application in zinc based redox flow battery (RFB) systems. Based on existing literature in the field, sixteen c...

ObjectivePhosphate (P) and zinc (Zn) are essential plant nutrients required for nodulation, nitrogen-fixation, plant growth and yield. Mostly applied P and Zn nutrients in the soil are converted into unavailable form. A small number of soil microbes have the ability to transform unsolvable forms...

Zinc phosphate coatings with and without subsequent sol-gel SiO2 post-sealing were prepared under ultrasonic on carbon steel. Microscopic morphologies, chemical compositions and corrosion protection of the coatings were investigated. The polarization curves showed that the protective performance...

A new ethyl bis(pyridin-2-ylmethyl)phosphate (2-bis(pm)Ope) ligand has been synthesized and used for synthesis of copper(II) and zinc(II) complexes of the formula [MCl2(2-bis(pm)Ope)] [M = Cu(II), Zn(II)]. Despite having the same general formula, Cu(II) and Zn(II) complexes are not isostructural...

Recently, zinc and its alloys have been introduced as potential metal candidates for biodegradable implant applications with an ideal degradation rate. In the study, Mg-based coating was fabricated on pure zinc to improve its corrosion rate and cytocompatibility by facile chemical deposition for...

This review deals on the interaction of inorganic phosphate anions with zinc(II)-based luminescent dyes, with particular attention to the effects on their emission spectra observed upon binding of these anions to zinc(II). Interaction with phosphates induces different effects, including electron...